Half Sum Element

using System;
class Program
{
    static void Main()
    {
        int n = int.Parse(Console.ReadLine());
        double firstNumber = double.Parse(Console.ReadLine());
        double max = firstNumber;
        double counter = max;
        for (int i = 0; i < n-1; i++)
        {
            double number = double.Parse(Console.ReadLine());
            counter += number;
            if (number > max)
            {
                max = number;
            }
            //else
           // {
           //     counter += number;
           // }
        }
        counter -= max;
        if (max == counter)
        {
            Console.WriteLine("Yes, sum = {0}", max);
        }
        else
        {
            Console.WriteLine("No, diff = {0}", Math.Abs(counter - max));
        }
    }
}